Computational simulation of ionization processes in single-bubble and multi-bubble sonoluminescence

doi:10.1088/1674-1056/ac6745

中国物理B ›› 2022, Vol. 31 ›› Issue (11): 117802-117802.doi: 10.1088/1674-1056/ac6745

Computational simulation of ionization processes in single-bubble and multi-bubble sonoluminescence

Jin-Fu Liang(梁金福)^1,†, De-Feng Xiong(熊德凤)¹, Yu An(安宇)², and Wei-Zhong Chen(陈伟中)³

1 School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550025, China;
2 Department of Physics, Tsinghua University, Beijing 100084, China;
3 Institution of Acoustics, Nanjing University, Nanjing 210093, China

收稿日期:2021-10-05 修回日期:2022-04-09 接受日期:2022-04-14 出版日期:2022-10-17 发布日期:2022-10-19
通讯作者: Jin-Fu Liang E-mail:jfliang@gznu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11864007 and 11564006).

Computational simulation of ionization processes in single-bubble and multi-bubble sonoluminescence

Jin-Fu Liang(梁金福)^1,†, De-Feng Xiong(熊德凤)¹, Yu An(安宇)², and Wei-Zhong Chen(陈伟中)³

1 School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550025, China;
2 Department of Physics, Tsinghua University, Beijing 100084, China;
3 Institution of Acoustics, Nanjing University, Nanjing 210093, China

Received:2021-10-05 Revised:2022-04-09 Accepted:2022-04-14 Online:2022-10-17 Published:2022-10-19
Contact: Jin-Fu Liang E-mail:jfliang@gznu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11864007 and 11564006).

摘要/Abstract

摘要： The most recent spectroscopic studies of moving-single bubble sonoluminescence (MSBSL) and multi-bubble sonoluminescence (MBSL) have revealed that hydrated electrons (e$_{{\rm aq}}^{-}$) are generated in MSBSL but absent in MBSL. To explore the mechanism of this phenomenon, we numerically simulate the ionization processes in single- and multi-bubble sonoluminescence in aqueous solution of terbium chloride (TbCl$_{3}$). The results show that the maximum degree of ionization of single-bubble sonoluminescence (SBSL) is approximately 10000 times greater than that of MBSL under certain special physical parameters. The hydrated electrons (e$_{{{\rm aq}}}^{-}$) formed in SBSL are far more than those in MBSL provided these electrons are ejected from a bubble into a liquid. Therefore, the quenching of e$_{{{\rm aq}}}^{-}$ to SBSL spectrum is stronger than that of the MBSL spectrum. This may be the reason that the trivalent terbium [Tb(III)] ion line intensities from SBSL in the TbCl$_{3}$ aqueous solutions with the acceptor of e$_{{{\rm aq}}}^{-}$ are stronger than those of TbCl$_{3}$ aqueous solutions without the acceptor of e$_{{{\rm aq}}}^{-}$. Whereas the Tb(III) ion line intensities from MBSL are not variational, which is significant for exploring the mechanism behind the cavitation and sonoluminescence.

关键词: sonoluminescence, Tb(III) ion emission, hydrated electrons, ionization processes

Abstract: The most recent spectroscopic studies of moving-single bubble sonoluminescence (MSBSL) and multi-bubble sonoluminescence (MBSL) have revealed that hydrated electrons (e$_{{\rm aq}}^{-}$) are generated in MSBSL but absent in MBSL. To explore the mechanism of this phenomenon, we numerically simulate the ionization processes in single- and multi-bubble sonoluminescence in aqueous solution of terbium chloride (TbCl$_{3}$). The results show that the maximum degree of ionization of single-bubble sonoluminescence (SBSL) is approximately 10000 times greater than that of MBSL under certain special physical parameters. The hydrated electrons (e$_{{{\rm aq}}}^{-}$) formed in SBSL are far more than those in MBSL provided these electrons are ejected from a bubble into a liquid. Therefore, the quenching of e$_{{{\rm aq}}}^{-}$ to SBSL spectrum is stronger than that of the MBSL spectrum. This may be the reason that the trivalent terbium [Tb(III)] ion line intensities from SBSL in the TbCl$_{3}$ aqueous solutions with the acceptor of e$_{{{\rm aq}}}^{-}$ are stronger than those of TbCl$_{3}$ aqueous solutions without the acceptor of e$_{{{\rm aq}}}^{-}$. Whereas the Tb(III) ion line intensities from MBSL are not variational, which is significant for exploring the mechanism behind the cavitation and sonoluminescence.

Key words: sonoluminescence, Tb(III) ion emission, hydrated electrons, ionization processes

中图分类号: (Sonoluminescence, triboluminescence)

78.60.Mq

47.55.dd (Bubble dynamics) 43.35.+d (Ultrasonics, quantum acoustics, and physical effects of sound)

Jin-Fu Liang(梁金福), De-Feng Xiong(熊德凤), Yu An(安宇), and Wei-Zhong Chen(陈伟中). Computational simulation of ionization processes in single-bubble and multi-bubble sonoluminescence[J]. 中国物理B, 2022, 31(11): 117802-117802.

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Computational simulation of ionization processes in single-bubble and multi-bubble sonoluminescence

Computational simulation of ionization processes in single-bubble and multi-bubble sonoluminescence

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